What is the role of the ankle-brachial index (ABI) in the workup of peripheral vascular disease (PVD)?

Updated: Dec 31, 2017
  • Author: Everett Stephens, MD; Chief Editor: Erik D Schraga, MD  more...
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Answer

The ankle-brachial index (ABI) is a useful test for comparing pressures in the lower extremity with pressures in the upper extremity. Blood pressure normally is slightly higher in the lower extremities than in the upper. Comparison to the contralateral side may suggest the degree of ischemia.


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